This feature is accessed by completing Instincts Story mode.

Either select the 'Cheat' option at the 'Main' menu or alternately pause gameplay to enter the following codes (without the quotes) to unlock the corresponding effects. When you enter the 'GiveMeTheMaps' code it remains permanently activated until you delete your 360 Profile. The other cheat codes are only active while you are playing and will be deactivated when you Shut off and reboot the console.

Unlock Heal:
Enter the code 'ImJackCarver'

Unlock Infinite Adrenaline:
Enter the code 'Bloodlust'

Unlock Infinite Ammo:
Enter the code 'UnleashHell'

Enable Evolutions:
Enter the code 'FeralAttack'

Unlock ALL Maps:
Enter the code 'GiveMeTheMaps'

Unlock Evolution Game:
Enter the code 'GiveMeItAll'

At the 'Map Editor' screen press LT + RT + LB + RB + X + Y + B + A + Click and hold Left Analog-Stick + Right Analog-Stick to display the French text 'J'avions vu une plane!'.